4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 021110-1307, USA
24 * Copyright (c) 2011, 2012, Whamcloud, Inc.
25 * Use is subject to license terms.
28 #include <dt_object.h>
29 #include <lustre_fid.h>
30 #include <lustre_dlm.h>
32 #ifndef _LUSTRE_LQUOTA_H
33 #define _LUSTRE_LQUOTA_H
36 * Space accounting support
37 * Format of an accounting record, providing disk usage information for a given
40 struct acct_rec { /* 16 bytes */
41 __u64 bspace; /* current space in use */
42 __u64 ispace; /* current # inodes in use */
45 /* Name used in the configuration logs to identify the default metadata pool
46 * (composed of all the MDTs, with pool ID 0) and the default data pool (all
47 * the OSTs, with pool ID 0 too). */
48 #define QUOTA_METAPOOL_NAME "mdt="
49 #define QUOTA_DATAPOOL_NAME "ost="
52 * Quota enforcement support on slaves
57 /* The quota slave feature is implemented under the form of a library.
58 * The API is the following:
60 * - qsd_init(): the user (mostly the OSD layer) should first allocate a qsd
61 * instance via qsd_init(). This sets up on-disk objects
62 * associated with the quota slave feature and initiates the quota
63 * reintegration procedure if needed. qsd_init() should typically
64 * be called when ->ldo_start is invoked.
66 * - qsd_fini(): is used to release a qsd_instance structure allocated with
67 * qsd_init(). This releases all quota slave objects and frees the
68 * structures associated with the qsd_instance.
70 * Below are the function prototypes to be used by OSD layer to manage quota
71 * enforcement. Arguments are documented where each function is defined. */
73 struct qsd_instance *qsd_init(const struct lu_env *, char *, struct dt_device *,
74 cfs_proc_dir_entry_t *);
76 void qsd_fini(const struct lu_env *, struct qsd_instance *);
78 /* helper function used by MDT & OFD to retrieve quota accounting information
80 int lquotactl_slv(const struct lu_env *, struct dt_device *,
81 struct obd_quotactl *);
84 /* dumb procfs handler which always report success, for backward compatibility
86 int lprocfs_quota_rd_type_dumb(char *, char **, off_t, int, int *, void *);
87 int lprocfs_quota_wr_type_dumb(struct file *, const char *, unsigned long,
90 #endif /* _LUSTRE_LQUOTA_H */